Heat-insulating device



. H. MOCK. HEAT NSULATING DEVICE. APPLICATION msn ocr. 8. ma.

Patented Aug. 17, 1920.

. HUGO MooK, or" `NEW YORK, N.`Y.

HEAT-InsULATING DEVICE.

` Specification of Letters Patent.

Patented Aug. 17, 1920.

Application filed October 8, 1918. Serial No. 257,325.

To all when?. t may]` concern'.-

Be it known that l, ltlUoo Moon, a citizen of the United States, Vresiding at 930 St. Nicholas avenue, in the borough oi` Manhattan, city of New York, in the county of New York and State oit New York, have invented certain new and use'iui improvements in lleatlnsulating Devices, oli which the following is a speciiication.

This invention relates to heat insulating devices and more specifically has for its object theprovision oi a tireless cooker which Will be ilacture. y

A further object of "the invention is` to provide a heat insulating device which can be used either as `a tireless cooker or as a portable refrigerator.

il iurther object oi the invention is to provide a lireless cooker which can be compressed into a very small space when not in use and so will economize room.

Another object of the invention is to provide a tireless cooker, the parts ot which can be used either independently or in combination `to insulate a cooking vessel.

Further objects oi" the invention Will be apparent from the drawings, in which,

Figure 1 represents a perspective view of the insulating unit hereinafter described, the unit being shown in expanded condition as in use, the cooking vessel being shown in dotted lines,

Fig. 2 is a view similar to Fig. 1 showingT three such concentric units superimposed upon each other, the tivo inner units and the cooking vessels being shown in dotted lines,

Fig. 3 is a section on line 3-3 of Fig. 2,

Fig. 4 is a horizontal section through line 4.4 of Fig. 1,

Fig. 5 is a horizontal section through line 55 of Fig. 2, and

Fig. (i is a perspective view of the insulating device in the collapsed position, this perspective view correctly representing one or more collapsed units.

The insulating unit is composed of the top 1li preferably made oiv Wood, to which is joined the cylinder 11 made oit oil-cloth or similar collapsible waterproof material. rlhis cylinder is joined in an air-tight manner tothe top 14C so that when expanded, the top 14 and the cylinder Will inclose a column of air therein in an air-tight manner.`

21, and 19 represent reinforcing rings oit AWood at the tops of each cylinder, 24, 23 andv portable and inexpensive to manu- 22 similar reinforcing rings but of greater Width in the middle-olE each cylinder, and 25, 26 and 2T represent reinforcing rings `at the bottom oi said cylinders tending to keep said cylinders in expanded condition when open. represents a handle by which `the unit may be grasped, said handle also iorm# ing a .means for separating the tops ot'the units from each otlic' as Will more clearly be seen from Figs. 2 and 3. i i

In Fig. 2, 15 represents the dzop ol1 the largest unit, 141 the middle unit and 13 the smallest unit, oi.l which the cylinders are represented by 12, 11 and 10 respectively, the bases 'of said cylinders being numbered 16, 17 `and 1S, said bases being preferably made oli Wood and fitting accurately into the cylinders 12, 11 and 10. These Wooden bases are not attached to the cylinders into which they respectively lit but as shown, can be used separately or in combination to insulate the bottom. of the cooking vessel or vessels for Which these bases act as supports. represents the cooking vessel in which the food to be cooked is lirst heated and then placed inside one or more of the insulating units. It is evident that it desired, these units can be usedindependently, each to insulate a cooking vessel, or can be used in combination to.insulate a single vessel. It is evident that a greater insulating effect Will be obtained it a number are used in combination as a larger air soace and greater insulation is provided in tiiis way. The rings 24;, 23 and 22, more clearly shown in Fig. 3, are preferably of a Width greater than the rings 21, 20 or 19 so as they will tend to space the respective units from each other when same are in an expanded condition. By making the cylinders 10, 11 or 12 of a Waterproof and airproof fabric Which is collapsible, such as of olcloth, the units may be compressed into very small space when not in use.

By making the cylinders .tit the tops in an airtight manner a column ol.: air is inclosed tightly in each unit and as the heated air tends to stay on top, there is an absence oli convection currents when the device is used as a tireless cooker.

lhenused as a refrigerator, an open pan is substituted for the cooking vessel, ice bewing put in the open pan and it will be found manner so as to'assist in the expansion and contraction of same along predetermined lines. Y '5 lhat I claim is l. A heat insulating unit comprising an air-tight and Waterproof cylindrical collapsible hood adapted to cover a cooking vessel when in an expanded condition, means for keeping the bottom and center of said hood in an expanded condition, and means for closing the bottom ol said hood.

2. A heat insulating device comprising an air-tight rigid top member, a cylindrical member made of Waterproof collapsible fabric joined thereto so asrto confine an air space When the cylindrical member is eX- pand'ed, meansffor keeping the opposite end of said cylindrical member in an expanded condition, andmeans for closing the bottom of said cylindrical member.

3. A tireless cooker comprising a series of independent hoods of varying diameter, independent means Jfor closing each of said hoods aty the bottom, said hoods being` capable of being employed separately to inclose a series of cooking vessels or in com` bination, to inclose a single cookingvessel.

4:.' A tireless cooker comprising a series of independent hoods of varying diameter, in-

dependent means for closing cach ol said hoods at the bottom, said hoods'being capable of being employed separately to inclose a series of cooking vessels or in combination, toV inclose a single cooking vessel, and each of Said hoods having means in the interior thereof for spacing said hoods lrom cach other.

5. A lirelcss cooker comprising a series of independent hoods of varying diameter, independent means for closing each of said hoods at the bottom, said hoods being capa blc of being employed separately to inclose a series ot' cooking vessels or in combination, to inclose a single cooking vcsscl, and means for spacing each of said hoods at predetermined distances from each other.

6. A Iireless cooker comprising a series of independent collapsible hoods ot raiying diameters and bases fitting cach ol said hoods, each hood and base constituting an independent heat insulating unit, said bases and hoods also being capable of beingl cniployed in combination with cach other to form a series of concentric hoods and a single bottom for said series of hoods.

In testimony whereof I hereunto ailix my signature. Y

HUG() MOQIL 

